#include <sys/fcntl.h>
#include <sys/file.h>
#include <unistd.h>
#include <stdio.h>
#include <termio.h>
#include <termios.h>

int main(){

int *pointer;
int x;

x=20;
pointer=&x;
printf("x is equal to %d\n",*pointer);
printf("x's adress is %ld\n",&x);

x=25;
printf("x is still %d\n",*pointer);

return(0);

}